Complete Commentary on the Whole Bible, by Matthew Henry, at sacred-texts.com
(Rev 20:1-3) Satan is bound for a thousand years.
(Rev 20:4-6) The first resurrection; those are blessed that have part therein.
(Rev 20:7-10) Satan loosed, Gog and Magog.
(Rev 20:11-15) The last and general resurrection.
Here is a vision, showing by a figure the restraints laid on Satan himself. Christ, with Almighty power, will keep the devil from deceiving mankind as he has hitherto done. He never wants power and instruments to break the power of Satan. Christ shuts by his power, and seals by his authority. The church shall have a time of peace and prosperity, but all her trials are not yet over.
Here is an account of the reign of the saints, for the same space of time as Satan is bound. Those who suffer with Christ, shall reign with him in his spiritual and heavenly kingdom, in conformity to him in his wisdom, righteousness, and holiness: this is called the first resurrection, with which none but those who serve Christ, and suffer for him, shall be favoured. The happiness of these servants of God is declared. None can be blessed but those that are holy; and all that are holy shall be blessed. We know something thing of what the first death is, and it is very awful; but we know not what this second death is. It must be much more dreadful; it is the death of the soul, eternal separation from God. May we never know what it is: those who have been made partakers of a spiritual resurrection, are saved from the power of the second death. We may expect that a thousand years will follow the destruction of the antichristian, idolatrous, persecuting powers, during which pure Christianity, in doctrine, worship, and holiness, will be made known over all the earth. By the all-powerful working of the Holy Spirit, fallen man will be new-created; and faith and holiness will as certainly prevail, as unbelief and unholiness now do. We may easily perceive what a variety of dreadful pains, diseases, and other calamities would cease, if all men were true and consistent Christians. All the evils of public and private contests would be ended, and happiness of every kind largely increased. Every man would try to lighten suffering, instead of adding to the sorrows around him. It is our duty to pray for the promised glorious days, and to do every thing in our public and private stations which can prepare for them.
While this world lasts, Satan's power in it will not be wholly destroyed, though it may be limited and lessened. No sooner is Satan let loose, than he again begins deceiving the nations, and stirring them up to make war with the saints and servants of God. It would be well if the servants and ministers of Christ were as active and persevering in doing good, as his enemies in doing mischief. God will fight this last and decisive battle for his people, that the victory may be complete, and the glory be to himself.
After the events just foretold, the end will speedily come; and there is no mention of any thing else, before the appearing of Christ to judge the world. This will be the great day: the Judge, the Lord Jesus Christ, will then put on majesty and terror. The persons to be judged are the dead, small and great; young and old, low and high, poor and rich. None are so mean, but they have some talents to account for; and none so great, as to avoid having to account for them. Not only those alive at the coming of Christ, but all the dead. There is a book of remembrance both for good and bad: and the book of the sinner's conscience, though formerly secret, will then be opened. Every man will recollect all his past actions, though he had long forgotten many of them. Another book shall be opened, the book of the Scriptures, the rule of life; it represents the Lord's knowledge of his people, and his declaring their repentance, faith, and good works; showing the blessings of the new covenant. By their works men shall be justified or condemned; he will try their principles by their practices. Those justified and acquitted by the gospel, shall be justified and acquitted by the Judge, and shall enter into eternal life, having nothing more to fear from death, or hell, or wicked men; for these are all destroyed together. This is the second death; it is the final separation of sinners from God. Let it be our great concern to see whether our Bibles justify or condemn us now; for Christ will judge the secrets of all men according to the gospel. Who shall dwell with devouring flames?